2022金砖国家工业创新大赛

入围决赛项目信息

一、参赛项目名称（中文）

基于太阳能的CO₂资源化利用系统

二、参赛项目名称（英文）

Solar-Driven CO2 Utilization System

三、参赛单位（中文）

天津大学

四、参赛单位（英文）

Tianjin University

五、项目简介（中文）

实现“碳中和”是金砖国家可持续发展的必然要求，也是全球面临的重要议题。本项目所开发的“基于太阳能的CO2资源化利用系统”，以太阳光为能量输入，以CO2为原料，利用电催化反应，合成重要工业产品——合成气，变废为宝，让CO2这一温室气体变成重要碳资源，同步实现节能减排与化工生产。

此系统可面向弃光电的消纳利用、工业尾气高值转化、可分布式化工生产等多个应用场景，具有可观的市场规模。基于现有技术指标，每平米催化电极年处理CO2约25吨，生产合成气约16吨。若目前我国弃光电总量的80%为本系统所利用，则每年可固定CO2气体93万吨，这相当于5000万棵树一年时间的固碳总量，同时生产合成气60万吨，节约30万吨煤炭的消耗。本系统所转化的CO2份额可用于碳交易，所生产的产品可供应化工基础原料市场，具有可观的经济效益。每平米催化电极年盈利约4.5万元，且具有显著规模经济效应，在我国80%弃光电规模下，每年可创造14~18亿元的经济净收益，具有巨大的工业化应用潜力。

目前，团队掌握催化剂制备生产、电极组装、电解器设计、电堆系统开发、微网耦合等一系列核心技术，并基于系统申请发明专利一项。本项目将助力金砖国家实现绿色的低碳发展路线。

六、项目简介（英文）

Achieving “carbon neutrality” is essential for the sustainable development of BRICS countries,which is also an important issue considered worldwide. The “Solar-driven CO2utilization system” developed in this project uses sunlight as energy input and CO2 as raw material to synthesize syngas, an important industrial product, by electrocatalytic reactions. This system could turn the greenhouse gas into an important carbon resource, realizing “waste-to-treasure” transformation. It achieves energy saving and chemical production, simultaneously.

This system can be used in many application scenarios, such as remission of the curtailment of PV power, value-added conversion of industrial tail gas, and distributed production of chemicals, which has a considerable market. Based on the currenttechnology, ~25 tons of CO2can be converted into ~16 tons of syngas by 1 cm2 electrode per year. If 80% of the wastedPV power in China is utilized by this system, 930,000 tons of CO2 gas can be fixed annually, which is equivalent to the total carbon sequestration of 50 million trees in one year, while producing 600,000 tons of syngas and saving 300,000 tons of coal. The CO2 converted by this system can be used for trading ofcarbon credits. The products can be supplied to the chemical market. Thus, this system has considerable economic values. The annual profit of about 45,000 RMB would be gained by 1 cm2 electrode per year. The significant scaling effect of the system could enable a net economic return of 1.4~1.8 billion RMB per year if 80% of the wastedPV power in China is utilized. Therefore, the solar-driven CO2utilization system has the potential for industrial application.

Currently, the team has developed a series of key technologies including the synthesis of electrocatalysts, assemblyof electrode, design of electrolyzers, development of stack system, coupling of micro-grids. One patent based on the system has been applied. This project will help BRICS countries to develop a low-carbon routetowards a green future.

七、展示图片

八、金砖元素

本作品的成果能够适用于金砖国家未来的低碳发展路线，实现化工生产、钢铁冶炼等高排放行业废气的减排，减少温室气体的影响，实现绿色发展；另一方面，本作品实现了CO2的资源化、高值化利用，变废为宝，为金砖国家的各个行业提供重要的生产原料，实现高质量工业发展。