Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and device for preparing H2 by simultaneous thermochemical cycle mineralization of CO2 and decomposition of H2O

A thermochemical cycle, CO2 technology, applied in chemical instruments and methods, inorganic chemistry, hydrogen production, etc., can solve the problems of economy and low added value, and achieve easy large-scale industrial application, appropriate reaction temperature, high theoretical The effect of thermal efficiency

Active Publication Date: 2018-11-16
ZHEJIANG UNIV
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new method described by this inventor improves both carbon capture and energy utilisation compared to previous methods that produced only one type of product - hydrogen gas or liquid fuel from coal combustion. It also simplifies the overall manufacturing processes for producing these products while reducing costs associated therewith. Overall, this innovative approach allows more efficient use of resources than current options without sacrificing their effectiveness over longer periods of times.

Problems solved by technology

This patented technical problem addressed in this patents relates to reducing green house gas emitting from fossil fuel combustion processes through capturing and storing CO2/CO, converting them into valuable chemical compounds like MgO, NaOH, LiH, KF, FeSO4. These new techniques aim at developing efficient methods for removing these metallics without causing negative effects on environment systems.

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
  • Method and device for preparing H2 by simultaneous thermochemical cycle mineralization of CO2 and decomposition of H2O

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0037] (1) 14mol of H 2 O, 1.5mol of I 2 and 1mol of SO 2 Send into the Bunsen reaction device 1, stir the reaction solution at a constant speed by the motor device to ensure that it is evenly mixed, and a spontaneous exothermic reaction occurs at 20 ° C and 1 atm, producing a watery HI phase (HI x ) and H 2 SO 4 Phase solution, in which the HI phase mainly contains hydrogen iodide solution and excess iodine, H 2 SO 4 Phase mainly contains H 2 SO 4 Solution, the chemical reaction formula of this reaction is as follows:

[0038] I 2 +SO 2 +2H 2 O→2HI+H 2 SO 4

[0039] The biphasic solution in the Bunsen reaction unit 1 is separated in the liquid phase separation unit 2;

[0040] (2) Under 120°C, 0.08atm and adiabatic conditions, in H 2 SO 4 The separated H in the concentration unit 4 2 SO 4 The phase solution is subjected to multi-stage sulfuric acid concentration treatment;

[0041] (3) Concentrated H 2 SO 4 phase into concentrated H 2 SO 4 In the cataly...

specific Embodiment 2

[0052] (1) 15molH 2 O, 5molI 2 and 1molSO 2 Send into the Bunsen reaction device 1, stir the reaction solution at a constant speed by the motor device to ensure that it is evenly mixed, and an autonomous exothermic reaction occurs at 70 ° C and 1.5 atm to produce a watery HI phase (HI x ) and H 2 SO 4 Phase solution, in which the HI phase mainly contains hydrogen iodide solution and excess iodine, H 2 SO 4 Phase mainly contains H 2 SO 4 Solution, the chemical reaction formula of this reaction is as follows:

[0053] I 2 +SO 2 +2H 2 O→2HI+H2 SO 4

[0054] The biphasic solution in the Bunsen reaction unit 1 is separated in the liquid phase separation unit 2;

[0055] (2) Under 190°C, 0.69atm and adiabatic conditions, in H 2 SO 4 The separated H in the concentration unit 4 2 SO 4 The phase solution is subjected to multi-stage sulfuric acid concentration treatment;

[0056] (3) Concentrated H 2 SO 4 phase into concentrated H 2 SO 4 In the catalytic decomposit...

specific Embodiment 3

[0067] (1) 16molH 2 O, 9molI 2 and 1molSO 2 Send into the Bunsen reaction device 1, stir the reaction solution at a constant speed by the motor device to ensure that it is evenly mixed, and an autonomous exothermic reaction occurs at 120 ° C and 2 atm to produce a watery HI phase (HI x ) and H 2 SO 4 Phase solution, in which the HI phase mainly contains hydrogen iodide solution and excess iodine, H 2 SO 4 Phase mainly contains H 2 SO 4 Solution, the chemical reaction formula of this reaction is as follows:

[0068] I 2 +SO 2 +2H 2 O→2HI+H 2 SO 4

[0069] The biphasic solution in the Bunsen reaction unit 1 is separated in the liquid phase separation unit 2;

[0070] (2) Under 260°C, 1.3atm and adiabatic conditions, in H 2 SO 4 The separated H in the concentration unit 4 2 SO 4 The phase solution is subjected to multi-stage sulfuric acid concentration treatment;

[0071] (3) Concentrated H 2 SO 4 phase into concentrated H 2 SO 4 In the catalytic decomposit...

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 relates to the field of CO2 discharging reduction and thermochemical hydrogen production, and aims to provide a method and device for preparing H2 by simultaneous thermochemical cycle mineralization of CO2 and decomposition of H2O. A Bunsen reaction device is connected with a liquid phase separation device; the liquid phase separation device is connected with a HIx concentration device and a H2SO4 concentration device respectively; the H2SO4 concentration device, a concentrated H2SO4 catalytic decomposition device and the Bunsen reaction device are connected in sequence; the HIxconcentration device is connected with the Bunsen reaction device and a MgI2 generation reactor; the MgI2 generation reactor is connected with a MgI2 distillation device; the MgI2 distillation deviceis connected with the Bunsen reaction device and a MgI2 hydrolytic carbonation reactor; the MgI2 hydrolysis carbonation reactor is connected with an HI catalytic decomposition reactor; and the HI catalytic decomposition reactor is then connected with the Bunsen reaction device. According to the device, a CO2 mineralization technology and thermochemical sulfur-iodine open-cycle water decompositionfor hydrogen production are organically combined creatively; CO2 is mineralized and fixed under a relatively mild reaction condition, and H2 with a high additional value is co-produced; and an HI-I2 rectification process in a traditional hydrogen production cycle is avoided, and higher heat efficiency is achieved.

Description

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

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
Owner ZHEJIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com