CN203877911U

CN203877911U - Small photo stimulating solar energy methane reforming reactor

Info

Publication number: CN203877911U
Application number: CN201320881882.8U
Authority: CN
Inventors: 桑丽霞; 王国瑞
Original assignee: Beijing University of Technology
Current assignee: Beijing University of Technology
Priority date: 2013-12-30
Filing date: 2013-12-30
Publication date: 2014-10-15
Anticipated expiration: 2023-12-30

Abstract

The utility model relates to a small photo stimulating solar energy methane reforming reactor and belongs to related fields of chemical energy and solar energy storage and methane catalytic reforming. The small photo stimulating solar energy methane reforming reactor is composed of a quartz double tube reactor, a light beam generator, a heating furnace, a temperature controller and a thermal couple. The small photo stimulating solar energy methane reforming reactor is mainly used for solving the problem that solar energy is utilized as a heat source only and can not be utilized as a light wave which is directly used as a catalyst and a reaction gas in a methane reforming reaction energy storage process. According to the small photo stimulating solar energy methane reforming reactor, the light beam generator is adopted for simulating sunlight and providing energy for photo catalysis and thermal catalysis, a sleeve type quartz tube reactor is used for containing an integral type catalyst and carrying out preheating and reaction on a feed gas, an open-close heating furnace, the thermal couple and the temperature controller are used as supporting, heat preservation and temperature control devices of the quartz tube reactor, and temperature of a reaction point is accurately controlled; and under the photo-thermal synergistic effect of a novel integral type catalyst, methane and carbon dioxide can be efficiently reformed and transformed into synthesis gas.

Description

The short sun power methane reforming reaction device of a kind of small light

Technical field

The utility model relates to the short sun power methane reforming reaction device of a kind of small light, belongs to the association areas such as sun power chemistry accumulation of energy and methyl hydride catalyzed reformation.

Background technology

For methane reforming reaction, from calculation of thermodynamics, in the time that temperature reaches more than 600 DEG C, just there is synthetic gas to generate, and raise with temperature of reaction, reaction-ure conversion-age increases, and synthetic gas yield also improves.Its high endothermic character makes industrial production energy consumption very high, but this characteristic can be used to store the high temperature waste hot of sun power, nuclear energy and industry.Sun power is the renewable energy source that resource is very enriched.But it has with geographic location, weather condition to change shortcoming greatly.In order to expand the scope of utilizing of sun power, must first assemble sun power and be transformed into the long-term form of preserving and carrying at a distance that is suitable for.Utilize solar heating methane reforming reaction producing synthesis gas, reaction converts solar energy into the chemical energy of fuel, and reacted product calorific value is promoted, and makes sun power be converted into the form of easy storage and utilization simultaneously, has solved the instability problem of sun power.Sun power methane reforming reaction institute producing synthesis gas can pass through the long-range conveying of pipeline, then releases energy through reversible thermopositive reaction, thereby realizes conversion, storage and the conveying of energy.So sun power methane reforming reaction is the effective way that develops sun power, simultaneously also significant to reducing greenhouse gas emission.

And in sun power methane reforming reaction, promote the reactor that this calorific value adopts and be generally traditional tubular reactor.Reactor is the key part of realizing sun power methane reforming with carbon dioxide.The design of reactor has determined that sun power provides form, the transformation efficiency of methane and the efficiency of conversion of energy of energy.Most of research at present all concentrates on using sun power as single source utilization.Its reactor adopting is single heat catalysis device, and in this single heat catalysis device, not direct heating catalyzer and reactant gases of the sun, first heat energy absorbed by nontransparent reactor wall, and then be transferred to catalyzer.Owing to having thermal resistance between catalyst layer and wall, and the thermal conductivity of catalyzer is low and heat flux is restricted, and catalyzer can not get enough heats, thereby causes the transformation efficiency of methane and carbon dioxide lower, and the energy storage efficiency of sun power is lower.And sun power is luminous energy in essence, radiation spectrum comprises 7% ultraviolet ray, 47% visible ray and 46% infrared rays, sun power methane reforming is in the time carrying out heat catalysis, if sun power direct radiation catalyzer and reactant gases also may cause that light-catalyzed reaction is improved reaction efficiency.In methane reforming reaction, conventionally adopt and there is highly active precious metal as catalyzer, if consider light promoting catalysis, can develop the metal oxide that can replace precious metal and there is highly active cheapness or mixture as catalyzer.

Summary of the invention

The utility model object is to solve at existing sun power methane reforming reaction device, sun power is only as thermal source utilization, and can not directly act on catalyzer and reactant gases is used with light wave, cause all lower problems of methane reforming transformation efficiency and solar energy storage efficiency.The utility model provides a kind of reactor that not only can carry out photochemical catalysis but also can carry out heat catalysis.

In order to achieve the above object, the technical solution adopted in the utility model is as follows:

The short sun power methane reforming reaction device of a kind of small light, is characterized in that: this reactor comprises gas-solid quartz tube reactor, light-beam generator, process furnace, temperature controller and thermopair; Quartz tube reactor is positioned in the Miniature tube type process furnace of open-close type; Quartz tube reactor is designed to telescopic reactor, formed by inner and outer tubes, and one end holding integrated formula catalyzer of inner tube, inside and outside two pipe junctions are designed to frosted mouth;

Quartz tube reactor outer tube two ends are provided with two place's arms, are respectively bottom manifold and top arm; Bottom manifold is used for placing thermopair, and pipe end adopts rubber plug to seal guarantee resistance to air loss; Top arm is the inlet pipe of mixing raw material gas, and the bottom manifold of quartz tube reactor is positioned over the aperture place that is reserved in process furnace opening and closing place, and this arm is used for placing thermopair; The end of thermopair, through the bottom manifold of silica tube, is positioned over integral catalyzer place, directly measures the temperature of reflecting point, by connecting temperature controller, temperature of reaction is accurately controlled; Light-beam generator adopts xenon lamp simulated solar irradiation, focuses on silica tube bottom integrated catalyzer lay down location by metal reflective mirror.

Further, the medullary ray of quartz tube reactor and the medullary ray of process furnace burner hearth and focusing center's point of light-beam generator are all on same medullary ray.

Brief description of the drawings

Fig. 1 is the schematic diagram of the short sun power methane reforming reaction device of small light

Fig. 2 is the schematic diagram of the silica tube reaction in reactor

Fig. 3 a is the schematic diagram of the process furnace of open-close type

Fig. 3 b is the side-view of Fig. 3 a

Fig. 4 is LaFeO ₃(3%)-Al ₂o ₃(10%)/AISI316 integral catalyzer have light and unglazed under methane conversion

Fig. 5 is LaFeO ₃(3%)-Al ₂o ₃(10%) H of/AISI316 integral catalyzer ₂the ratio of/CO

Wherein: 1, thermopair; 2, rubber plug; 3, catalyzer; 4, process furnace; 5, air outlet; 6, quartz tube reactor; 7, inlet mouth; 8, temperature controller; 9, light-beam generator; 10, frosted mouth; 11, thermopair arm; 12, outer tube; 13, inner tube; 14, handle; 15, knocker; 16, terminal stud; 17, clip; 18, support; 19, thermocouple hole.

Embodiment

Quartz tube reactor is telescopic reactor, is made up of inner and outer tubes, and this design is mainly used in the installation and removal of integral catalyzer.Inside and outside two pipe junctions are designed to frosted mouth, are mainly the resistance to air loss that ensures reactor, prevent from leaking gas in reaction process.The bottom design of inner tube is the disk of diameter 20mm, and for holding integrated formula catalyzer, inner tube is whole is together with pipe, for the discharge of synthetic gas after reforming reaction.Air outlet end caliber is designed to diameter 6mm, is convenient to connect gas piping, and the parts of connection outlet end are the adapters of diameter 6mm～3mm, and connecting pipeline adopts the plastics tubing of diameter 3mm to connect.Silica tube outer tube has two place's arms, and bottom manifold is used for placing thermopair, and pipe end adopts rubber plug to seal the resistance to air loss that ensures reactor.Top arm is the inlet pipe of mixing raw material gas, and two arms are designed to apart from each other, and this design can also have a well-mixed process after making gas enter quartz tube reactor, makes unstripped gas than (CH ₄: CO ₂) more close to 1:1.

Quartz tube reactor is positioned in the tubular oven of open-close type.Be designed to open-close type and be convenient to the dismounting of reactor.Open the aperture of a diameter 10mm apart from 60mm place, bottom in opening and closing place, aperture is the bottom manifold for placing quartz tube reactor, and the top arm of quartz tube reactor is near stove outside.

The end of thermopair, through the bottom manifold of silica tube, is positioned over integral catalyzer place.The temperature of reflecting point can be directly measured in this design, and by connecting temperature controller, temperature of reaction is accurately controlled.

The medullary ray of the medullary ray of quartz tube reactor and process furnace burner hearth and focusing center's point of light-beam generator are all on same medullary ray.Light-beam generator adopts xenon lamp simulated solar irradiation, focuses on silica tube bottom integrated catalyzer lay down location by accurate precious metal reflective mirror, and the round spot size after focusing is diameter 20mm.Thereby can directly act on integral catalyzer and reactant gases.

The utility model is applicable to sun power methane reforming, and embodiment is tested with the sun power methane reforming under the normal pressure of laboratory.Connect whole reactor with reference to Fig. 1, with the CH of purity 99.999% ₄cO with purity 99.999% ₂as reactant gases, measure calculate its 600 DEG C, 700 DEG C, 800 DEG C, when 900 DEG C of temperature spots, methane conversion when simulated solar light direct beam and non-direct projection and H ₂the ratio of/CO.Specific embodiments is as follows:

By LaFeO ₃(3%)-Al ₂o ₃(10%)/AISI316 integral catalyzer is seated in silica tube bottom integrated formula catalyzer lay down location, and inlet mouth passes into through the mixed unstripped gas (CH of mixing tank ₄: CO ₂=1:1), connect other all pipelines leak detection, guarantee without heating up after gas leakage.Open light-beam generator xenon lamp analog solar, open-close type process furnace provides a stable temperature environment and its to have the effect of insulation.Utilize K type thermopair to control respectively temperature at 600 DEG C, 700 DEG C, 800 DEG C, 900 DEG C these temperature spots, carry out reforming reaction after stablizing 30min.

Processing condition: raw gas flow is 10ml/min, temperature of reaction is controlled at 600 DEG C, 700 DEG C, 800 DEG C, 900 DEG C these temperature spots, carries out reforming reaction after stablizing 30min.

Reaction result: under the condition of xenon lamp simulated solar irradiation, methane conversion at each temperature spot all higher than the transformation efficiency under single heat catalysis.Fig. 4 and Fig. 5 are the test result figure of this example.

Claims

1. the short sun power methane reforming reaction device of small light, is characterized in that: this reactor comprises gas-solid quartz tube reactor, light-beam generator, process furnace, temperature controller and thermopair; Quartz tube reactor is positioned in the Miniature tube type process furnace of open-close type; Quartz tube reactor is designed to telescopic reactor, formed by inner and outer tubes, and one end holding integrated formula catalyzer of inner tube, inside and outside two pipe junctions are designed to frosted mouth;

2. the short sun power methane reforming reaction device of small light according to claim 1, is characterized in that the medullary ray of quartz tube reactor and the medullary ray of process furnace burner hearth and focusing center's point of light-beam generator are all on same medullary ray.