沈 阳 化 工 大 学 资 源 化 工 与 材 料 教 育 部 重 点 实 验 室
Key Laboratory on Resources Chemicals and Materials, Ministry of Education
A center of cutting-edge science and technology on resources utilization
The following technologies have been successfully developed and commercialized.
1. Low-tar fluidized bed two-stage gasification. It was successfully developed and commercialized to solve the "tar" problem of biomass gasification for production of clean producer gas. By far, 4 commercial plants treating 10-50 kt/a Chinese Herb Residue have been built and run for several years. The tar in their produced fuel gas by air-blown gasification is about 50 mg/Nm3. This indicates actually a breakthrough of the common technical difficulty in deep abatement (removal) of tar for biomass gasification. Currently, we are in cooperation with UBC and FPInnovations to develop an oxygen-blown gasifier that will be potentially applied in paper industry of Canada to produce wood-base syngas and in turn substitute bio-base nature gas (BNG). The application of the technology to low-rank coal for fuel gas will be on a 30000 Nm3/h plant that will be installed in Liaoning Province in 2022.
2. Low-NOx fluidized bed decoupling combustion. Taking advantage of the interaction between pyrolysis and combustion, the technology realizes efficient burning of high-moisture and high-N fuels to reach extra low NOx emission (reducing about 80% comparing to traditional combustion). An installation treating 60 kt/a distilled dispirit lees has been run for more than 6 years in Luzhou, Sichuan, while a few others burning 10-30 kt/a various biomass wastes have been distributed in different regions of China. A plant burning 200 t/d Furfural residue in Liaoning is almost ready for commercial running to render the Furfural production carbon neutral.
3. Micro fluidized bed reaction analysis (MFBRA). For the first time he proposed the use of micro fluidized bed MFB) in implementing isothermal gas-solid reaction analysis and further developed a series of instruments. By far totally 100 instruments and associated devices have been commercially sold to universities and institutes in China, with as well a few in Korea and France.
4. Wide working-temperature flue gas denitration catalyst based on solvothermal reaction. This is the only innovative technology in the world which does not use Ti/W powder in making the honeycomb-structured denitration catalyst. An invented solvothermal reaction was adopted to attain the highly active and easy-moulding paste-like catalyst cakemud, and the cakemud is in turn directly refined and extruded into honeycomb to manufacture the mononith-type denitration catalyst of commercial size. A 3000 m3/a catalyst production line shown below was built with the technology. Its produced catalyst enables a working temperature range of 200-400 ℃ in flue gas containing sulfur, and it is twice strong as the commercial catalyst made by kneading. The new technology allows also products with 18-40 holes on cross.
More than 10000 m3 catalyst has been produced to support over 90 denitration plants treat flue gas from coking ovens, sintering machines, steam boilers and waste incineration furnaces. Shown below are the pictures of 24 typical plants.
5. Transport bed flash calcination. Flash calcination that finishes reactions in 1-2 s has been successfully developed as an innovative new technology using a transport bed reactor. The technology was as well licensed to calcine pulverized magnesite on a 400 kt/a demonstration plant installed in Liaoning (see below). The use of this technology can reduce energy consumption by about 30% and decrease dust emission by more than 90%. A single plant of this type is also able to replace 20-25 traditional light calcination ovens, thus greatly promoting the development of the industry. Meanwhile, the technology can be applied to many other ores like limestone as well.
6. Directive pyrolysis for production of light-rich oil with high yields. He and his team has clarified the staged reaction control mechanism and further innovated the so-called moving bed reactor with internals for pyrolysis of particulate fuels like coal and oil shale to produce light-rich oil in its possibly maximal yield and highest quality. It has actually for the first time realized the production of oil and gas simultaneously with ideally high yields at operating temperatures above 1000 ℃. This has been well corroborated by tests on the 1000 t/a pilot plant shown below. The invented reactor and pyrolysis technology have been patented internationally in major countries that are enriched with coal and/or oil shale resources (USA, Canada, Australia, Brazil, Russia, etc.). Currently, we are working on an industrial verification facility that is to be run for long time in order to verify the reliability of the technology for industrial application.