System and process for preparing hydrogen by solar energy middle-low temperature thermal driven thermal chemical reaction

A technology of thermochemical reaction and hydrogen production system, which is applied in the field of conversion systems of medium and low grade energy, can solve problems such as unfavorable large-scale application, low receiver efficiency, complex system cost, etc., and is beneficial to large-scale promotion and application. , low manufacturing and operating costs, and simple system processes

Active Publication Date: 2008-10-22
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
View PDF0 Cites 34 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] (3) Hydrogen production by solar methane reforming. The heat required for methane steam reforming at around 900°C is provided by tower solar concentrating devices. However, due to high temperature, the efficiency of the receiver is low, and the entire system is complex and costly.
[0010] Regarding the above four hydrogen production methods, all of them use high-tempe

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • System and process for preparing hydrogen by solar energy middle-low temperature thermal driven thermal chemical reaction
  • System and process for preparing hydrogen by solar energy middle-low temperature thermal driven thermal chemical reaction
  • System and process for preparing hydrogen by solar energy middle-low temperature thermal driven thermal chemical reaction

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0086] Example

[0087] In this embodiment, solar energy, methanol, ethanol or dimethyl ether, and desalinated water are used for thermochemical reforming reaction to produce hydrogen. Combine Figure 5 , Figure 5 It is a schematic diagram of a hydrogen production system driven by a thermochemical reaction at low temperature in solar energy according to an embodiment of the invention. The system consists of a solar concentrator 5, an integrated absorption / reactor 6 and other auxiliary equipment.

[0088] The raw material methanol, ethanol or dimethyl ether (and desalinated water) in the raw material mixer 2 passes through the pipeline 10, and is sent to the preheater 4 through the pipeline 11 by the raw material pump 3 at a flow rate of 500-4000 ml / h, and then passes through the pipeline 12. Enter the solar energy absorption reactor 6. The fuel and water are preheated in the preheater 4 and the solar absorption reactor 6 and evaporated, and finally become superheated steam. Under n...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a hydrogen production system by utilizing thermochemical reaction thermally driven by solar energy under medium-lower temperature, which comprises a material supplying device for storing materials required for producing hydrogen, a material mixing device for mixing raw materials and non-reactants, a material measuring device for controlling the volume of raw materials sent into a preheater per unit time, the preheater for preheating raw materials, a solar energy absorption reactor for driving raw material to carry out reforming reaction by utilizing absorbed solar energy heat, a solar energy collector for aggregating solar energy with low energy flow density into medium-lower temperature heat energy with high energy flow density in a form of line focus so as to provide heat for material reforming reaction, a condenser for cooling reaction products, a gas-liquid separator for separating gas and liquid of a mixture, and a PSA (pressure swing adsorption)device for separating the obtained pure hydrogen. The invention also discloses a method for producing hydrogen by utilizing thermochemical reaction thermally driven by solar energy under medium-lower temperature. The system and the method of the invention reduce the cost of producing hydrogen by utilizing solar energy and are beneficial to mass popularization and application.

Description

technical field [0001] The present invention relates to the technical field of solar energy utilization, in particular to a system and method for producing hydrogen by thermochemical reaction driven by low-temperature heat in solar energy, in particular to a system and method for producing hydrogen by means of a low-concentration-ratio solar concentrating device to provide alternative fuel reforming reactions A conversion system and method for low-to-medium grade energy required. Background technique [0002] In the 21st century, the world's energy will shift from being dominated by fossil energy to an ever-changing diversified energy structure such as fossil fuel, nuclear energy, solar energy, and renewable energy. In particular, the advantages of solar energy, such as wide distribution, unlimited reserves, and clean exploitation and utilization, have attracted widespread attention. However, for a long period of time, the cost of large-scale development and utilization of s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C01B3/24
CPCY02P20/133
Inventor 金红光洪慧隋军刘启斌郑丹星
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap