What is the current situation regarding the simultaneous production of coal and other products? Come in and discuss it

Is anyone paying attention to this? {:3_46:}

The Integrated Gasification Combined Cycle (IGCC) power generation system is an advanced power system that combines gasification technology with an efficient combined cycle. It consists of two main parts, namely the coal gasification and purification section and the gas-steam combined cycle power generation section. The main equipment in the first section includes a gasification furnace, an air separation unit, and gas purification equipment (including sulfur recovery units), while the main equipment in the second section consists of a gas turbine power generation system, a waste heat boiler, and a steam turbine power generation system. The process of IGCC is as follows: Coal is gasified to produce gas with medium to low calorific value. This gas is then purified to remove pollutants such as sulfides, nitrides, and dust, resulting in a clean gaseous fuel. This fuel is fed into the combustion chamber of a gas turbine where it burns, heating the working gas and thereby driving the turbine to generate power. The exhaust gases from the turbine enter a waste heat boiler, where they are used to heat water and produce superheated steam that drives a steam turbine to generate power. In addition, IGCC can also be combined with industrial hydrogen production for use in oil refining, as is the case with the IGCC project in Fujian. IGCC technology integrates an efficient gas-steam combined cycle power generation system with clean coal gasification technology, offering high power generation efficiency as well as excellent environmental benefits; it represents a promising technology for clean coal power generation. At the current level of technology, the net efficiency of IGCC power generation can reach 43%–45%, with even higher levels expected in the future. The emission of pollutants is only 1/10 that of conventional coal-fired power plants, with a desulfurization efficiency of up to 99%, and sulfur dioxide emissions at around 25 mg/Nm3. (Presently, **sulfur dioxide levels are 1200 mg/Nm3**); nitrogen oxide emissions are only 15%–20% of those in conventional power plants, and water consumption is only 1/2 to 1/3 of that in conventional power plants, which is beneficial for environmental protection.

:) What’s your own opinion?

Today, Yaha Consulting organized a summit forum on IGCC and cogeneration. Based on the outcomes of the conference, it is clear that several cogeneration projects are not progressing smoothly; nevertheless, there is still high optimism, with hopes that more companies will get involved in such projects, though for now everyone is waiting to see what happens.

The IGCC of the Fujian Refining and Ethylene Project is operating successfully.

Co-production encompasses not only IGCC but also technology pathways that start with gasification, such as the production of methanol, dimethyl ether, ethylene glycol, acetic acid, olefins, and oil via Fischer-Tropsch synthesis; this represents coal-based co-production. Another approach involves using coking and dry distillation as the foundation for further processing downstream products such as tar and crude benzene.

IGCC technology also doesn’t seem to be very mature; many projects are still at the industrial demonstration stage

There are several different models for coal-based cogeneration. Those developed by Professor Ni Weidou from Tsinghua University, those from Shandong Yankuang, and those from Shanghai Huayi – facilities using these technologies are all in operation currently, and it seems that they are all functioning well. **It’s also supported.**

I think IGCC is less feasible than coal cogeneration.

IGCC possesses technical and environmental advantages; the main issues at present are high costs and a lack of engineering experience. IGCC combined with cogeneration represents a viable approach to addressing the high unit cost of pure IGCC. It is meaningless to compare which is better between IGCC and coal cogeneration, or which one is more feasible, as these are two different industries