A rotary combination valve and method for fixed-bed chemical chain hydrogen production

Abstract

The invention discloses a rotating combination valve and method for fixed bed chemical-looping hydrogen production and relates to the technical field of biomass pyrolysis gas chemical-looping hydrogenproduction. The rotating combination valve comprises a valve bottom connector, a rotating valve element, a valve cover and an external rotating control mechanism. The rotating combination valve is generally assembled on a set of fixed bed chemical-looping hydrogen production device. The rotating control mechanism controls the valve element to rotate, and thus channel interfaces are switched; thedevice works continuously and circularly, the device is more compact, the risk of welding and pipeline connecting leakage is reduced, and meanwhile, the device is easier to control and good in safety;and the compatible rotating valve element design is adopted, so that multi-step rotating and positioning according to the preset time and the preset angle can be achieved through a stepping motor control method, the valve element can also be controlled to rotate at the constant speed through an air-driven motor, and the two control methods are both suitable for the combination valve.

Description

technical field [0001] The invention relates to the technical field of biomass pyrolysis gas chemical chain hydrogen production, in particular to a rotary combined valve and method for fixed bed chemical chain hydrogen production. Background technique [0002] The energy crisis has always been concerned by people, and hydrogen energy has been increasingly valued as an effective solution. Hydrogen is an ideal clean and environmentally friendly secondary energy source with a wide range of uses. It can be prepared from primary energy as a raw material. For example, hydrogen production from fossil fuels is currently a common hydrogen production method. However, the unsustainability of fossil fuels and the serious pollution of the environment during the processing process make hydrogen production using renewable and environmentally friendly biomass as a raw material a hot research and development topic. At present, there are many biomass utilization technologies, most of which s...

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is how to make biomass pyrolysis raw material gas obtain high-quality hydrogen and CO2 products through reforming oxygen carrier and CO2 adsorbent; how to make the equipment more compact, There are no complicated pipeline connections and labor assembly costs, which reduces the risk of welding and pipeline connection leakage; how to make equipment control simpler and avoid the use of complex and high-cost electrical control systems; And the air is effectively isolated to avoid contact with the pyrolysis raw material gas and hydrogen, and the safety is better

Images